Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

cell membrane

QuestionAnswer
What is the function of the cell membrane? Maintains chemical composition by regulating what goes in/out, composed of lipids and proteins
What is the fluid mosaic model? phospholipid bilayer with cholesterols and membrane proteins. hydrophobic tails face each other in water-free space, heads face watery regions.
What are the types of passive transport? simple diffusion, osmosis, facilitated diffusion
What is the concentration gradient? where areas move from high to low concentrations
What is simple diffusion? hydrophobic substances (i.e. CO2, O, cholesterol) move from high to low concentration
What is facilitated diffusion? non-hydrophobic substances (can't interact with oily barrier) move from high to low concentration through protein channels that open/close
What is osmosis? water moves from low to high concentration through water channels (osmoreceptros) - because concentration refers to solute concentration*
What does hypotonic mean? the medium that is hypotonic has a relatively lower concentration
What does hypertonic mean? the medium that is hypertonic has a relatively higher concentration
What happens when the environment is hypertonic? water flows out of the cell, cell shrinks
What happens when the environment is hypotonic? water flows in, cell swells and bursts
What does isotonic mean? both mediums have the same concentration level, zero net flow
What is active transport? uses energy to move solutes from low to high concentration. it relies on membrane proteins
What is large particle transport? method by which large items are moved across cell membrane (into or out of the cell)
What are the types of large particle transport? into - endocytosis, out of - exocytosis
What is endocytosis? cell takes in particle by surrounding and engulfing it within a vesicle.
What are the types of endocytosis? phago (solid), pino (fluid)
What is phagocytosis? cell takes in large solid food particles that it then digests.
What is pinocytosis? cell takes in drops of cellular fluid containing dissolved nutrients
What is exocytosis? particle in vesicle in cell is released to outside by fusing vesicle with cell membrane
Created by: yanguin
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards